"In the end, of course, Microsoft's biggest challenge will come not from buggy software or litigious partners but from entrenched heavyweights like Nokia and Motorola. Already, those two, along with handset makers like Samsung, Siemens, and Sony Ericsson, have joined forces to develop hardware for their own operating system, called Symbian. With more than 20 products in development, the Symbian consortium has a big lead in the 4 million-strong market for smartphones. As that sector grows, Microsoft will need to play nice with both network operators and handset makers if it wants to catch up with the wireless industry's behemoths. "

Business 2.0 evaluates the fearsome forces in front of Microsoft in the smartphone (voice centric devices with PDA capabilities). Not a long article, but just some additional info (never to much to know!)